/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


//import com.sun.tools.hat.internal.server.HttpReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.AbstractList;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author bcamargo
 */
public class in extends HttpServlet {
   
    public static Map<String, Long> blacklist = new HashMap<String, Long>();

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String ip = request.getRemoteAddr();
            //System.out.println(ip);
            if(!blacklist.containsKey(ip))
            {
                blacklist.put(ip, System.currentTimeMillis());
                //System.out.println("put: " + System.currentTimeMillis());
                response.sendRedirect("pages/login.jsf");
            }
            else
            {
                //System.out.println("resta: " + (System.currentTimeMillis() - (long) blacklist.get(ip)));
                if((System.currentTimeMillis() - (long) blacklist.get(ip)) > 1000)
                {
                    blacklist.put(ip, System.currentTimeMillis());
                    response.sendRedirect("pages/login.jsf");
                }
            }
            if(blacklist.size() > 2000)
            {
                blacklist.clear();
            }

        } finally { 
            out.close();
        }
        
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
